Radionuclide Distribution and Transport in Terrestrial and Aquatic Ecosystems

Pots for growing plants including water-level indicators therefor, wherein the pot includes an outer pot and an inner pot supported therein having a lower portion of reduced diameter through which water is conducted upwardly by surface tension activity, and wherein the water-level indicator comprises a float in the water reservoir having a stem extending upwardly through a water inlet to indicate the water level.